code: def test_one_batch_dim(self):
      state = running_statistics.init_state(
          specs.Array((5,), jnp.float32)
      )
  
      x = jnp.arange(10, dtype=jnp.float32).reshape(2, 5)
  
      state = update_and_validate(state, x)
      normalized = running_statistics.normalize(x, state)
  
      mean = jnp.mean(normalized, axis=0)
      std = jnp.std(normalized, axis=0)
      self.assert_allclose(mean, jnp.zeros_like(mean))
      self.assert_allclose(std, jnp.ones_like(std))
  
imports: import functools
  import math
  from typing import NamedTuple
  from acme import specs
  from acme.jax import running_statistics
  import jax
  from jax import config
  import jax.numpy
  import numpy
  import tree
  from absl.testing import absltest
label_desc: Use image node_id 5 for calling the RunningStatisticsTest obj's underlying member method code with example usage: obj.test_one_batch_dim() without return types